User manual

APPLICATION INFORMATION
EASTERN US
Apply DuPont™ VELPAR® L from early spring to early
summer after hardwoods have broken bud and before full
leaf expansion.
Applications made over the top of pines may result in
excessive pine injury under conditions of high humidity and
t
emperature (80 degrees F).
WESTERN US
Rainbelt (areas of high spring rainfall): For best results,
apply in late winter or spring when brush is actively growing,
but prior to conifer budbreak.
If application is made after bud
break, use directional spray equipment to prevent contact
with conifer foliage, as injury may result.
Snowbelt (areas of low spring rainfall): For best results,
apply in the fall before soil freezes and after the final resting
bud has hardened on the conifers. Or, spring applications may
be made after snow cover melts in anticipation of rainfall
prior to conifer budbreak. Brush control results from spring
treatments will be dependent on sufficient rainfall following
application to activate VELPAR® L.
USE RATES
The rates listed below are for broadcast application. Use the
higher rate range for the harder to control (*suppression)
species in the PLANTS CONTROLLED listings of the Site
Prep and Release sections. Do not use more than one
application of VELPAR® L per year.
EASTERN US
VELPAR® L
Soil Texture (Quarts/Acre)
Crop Species Description Established Trees
Loblolly pine Loamy sand,
Longleaf pine sandy loam 2 – 3
Shortleaf pine Loam, silt loam,
Virginia pine silt, sandy clay loam 2 – 4
Slash pine Silty clay loam,
clay loam, sandy clay,
silty c
lay, clay 4.5 – 6
Red pine Loamy sand, sandy loam 2 – 4
Loam,
silt loam,
silt,
sandy clay loam 4 – 6
Silty clay loam, clay loam,
sandy clay, silty clay, clay 6 – 8
Established Trees
• 4 y
ear
s of age from transplanting on coarse-textured soils
• 3 years of age from transplanting on medium-textured
soils
• 2 years of age from transplanting for Red Pine
WESTERN US
Application rates by soil type for VELPAR® L in the
following western conifers: Blue spruce, Douglas fir,
Engleman spruce, Grand fir, Jeffrey pine, Lodgepole pine,
N
oble fir, Ponderosa pine, Sitka spruce, Western hemlock,
a
nd White fir.
Soil Texture VELPAR® L
Description (Quarts/Acre)
Loamy sand,
sandy loam 2 - 4.5
Loam,
silt loam,
sandy clay loam 3.5 - 6
Silt, silty clay loam,
clay loam,
sandy clay, silty clay,
clay 5 - 6
For first year plantings using bare root stock, treat only
transplant stock that is 2 years old (2-0, 1-1) or more, except
(1-0) f
or Ponderosa and Jeffrey pines. Apply VELPAR® L
only if rainfall has settled the soil around the base and root
systems of the transplants.
BRUSH CONTROLLED
VELPAR® L is recommended for the control or
suppr
ession of the following species in forestry release sites:
* Suppression – a visible reduction in plant population and/or
plant vigor as compared to an untreated area and generally not
accepted as control.
In addition to brush contr
olled
, herbaceous species listed in
W
eeds Contr
olled section of Release-Herbaceous
W
eed
Control may be controlled with these applications.
SPRAY EQUIPMENT
When applied as a liquid spray using water as the carrier,
VELPAR® L may be applied by ground equipment or by air
(helicopter onl
y).
For ground application, use enough water for thorough
coverage, usually a minimum of 25 gallons per acre. For
aer
ial a
pplica
tions, use at least 5 gallons of water per acre
Ash Fraxinus spp
Aspen, big tooth Populus grandidentata
Aspen, trembling Populus tremuloides
Birch Betula spp
Elder, box Acer negundo
Brambles Rubus spp
Cherry, black Prunus serotina
Cherry, pin Prunus pensylvanica
Deerbrush Ceanothus integerrimus
Dogwood, flowering* Cornus florida
Elm Ulmus spp
Hawthorn Crataegus spp
Hazel Corylus spp
Hone
ysuc
kle*
Lonicer
a spp
Manzanita, Greenleaf Arctostaphylos patula
Maple, red* Acer rubrum
Oaks Quercus spp
Poplar, balsam Populus balsamifera
Snowbrush (varnishleaf) Ceanothus velutinus
Sourwood* Oxydendrum arboretum
Sweetgum Liquidambar spp
Willows Salix spp
15